.dialog{
    width: 400px;
    height: 260px;
    background-color: wheat;
    margin: 20px auto;
    position: relative;
}

.header,.footer{
    background-color: teal;
    text-align: center;
    font-size: 45px;
    font-weight: bold;
}

.footer{
    width: 100%;
    position:absolute;
    bottom: 0;
}
